22h) Fu.H.E.u monitoring receiver

Links to other pages on this site:
e11 Receiver's Intermediate Frequency List
e12 Data for German communication receivers
e86 Thermionic Valves (tubes)
22a Torn.E.b
22b Data and and modifications for Kw.E.a
22c Info for LwEa, T8PL39 and NA6
E97 Modern 12V solidstate power converter

FuHEc has been moved to a new page see page r11

Funkhorch Empfänger-c (Monitoring receiver)
Circuit: 10x RV2P800 as
RF, RF, MIX, OSC, IF, IF, IF, Audion detector, Audio output, BFO/CAL. 2x Sirutor 5b as AGC rectifier.
IF= 1875kHz, single xtal-filter. Xtal controlled BFO: 1874.1/1875.9kHz.

Frequency ranges: 1. (White) 3.53-5.94MHz, 2. (Red) 5.77-9.68, 3. (Yel) 9.40-15.80, 4. (Blu) 15.35-25.80MHz.
Power requirement: 2V 1.9A, 90V 20mA. Automatic bias from anode current.
Inverter for 12V operation EW.h.
Measures (mm): 430 H x 340 W x 240 D, Weight: 27kg.

ESB Zusatz.
Zur Verminderung der Anfälligkeit von KW-Telefonieverbindungen nach Übersee hatte die Reichspost bereits 1931 auf Vorschlag der Fa. Telefunken (Dr. W. Runge) einen ESB-Verkehr Berlin-New York eingerichtet. ....und der Zusatz EB1/3a "Käthe" von Siemens zu Fu.H.E.c (1944/45) wurden übrigens auch gelegentlich für Abhörzwecke eingesetzt. Fritz Trenkle: Die dt. Funkpeil- und -Horch-Verfahren bis 1945, S.35.

EB1/3a, see pg 22i

Funkhorch Empfänger u.
All front marking are removed sometime in the 50's, but Hans Jürgen Keller / DH1AB has sent me most of them, and he
mentions that it is possible to get more such things from Günther Hütter <g.huetter@t-online.de>.

Fu.H.E.u seen from different angles

Fu.H.E.u Funkhorchempfänger 'u' (Monitoring receiver)
Frequency ranges: 0.73-1.65, 1.65-3.5, 3.5-7.5, 7.5-16, 16-25MHz
IF= 470kHz. Calibrator xtal: 2000kHz
Circuit: 9x RV2P800 as RF, MIX, Local osc, IF1, IF2, Audion detector, Audio, Calibrator, BFO.
Power: 2V 1.8A, 90V 20mA. Automatic bias from anode current.
Measures: 453H x 365W x 250D. Weight 22kg(?)

Note: It is another version, Fu.H.E.u1 with somewhat modified antenna connection

More notes related to this sort of receivers:
Fritz Trenkle, Die deutschen Funkpeil- und -Horch-Verfahren bis 1945, Seite 24..:
1.3 Empfangsgeräte für die Nachrichten-Aufklärung

D1056/1 is available from DL6VW, D1056/5 is in gothic letters - without circuit diagram

LA6NCA Helge operating the Fu.H.E.u1 with goniometer for direction finding 2004.10.29

Correspondence: You may write in English or German, Danish or Swedish, but I will reply in English (or Norwegian)


Last update: 2005.02.02